On the right side of your rockwork, are those rocks siliconed or somehow secured? They look a little unstable from the pictures point of view, and i would be really worried about that because with all the things that go in a SW
tank, if your rocks are not completely stable, it could spell disaster, starting with a smashed tank and flooded floors. You've got some really large round rocks on top or other round rocks.. Hope you've secured them, or you don't plan on having any pistol shrimp, turbo snails, or anything else strong enough to move things around.
Still looks nice though.